After years of waiting and hoping, solar power is now affordable, and some solar power companies are cashing in.
The Chinese government issued $30 billion in credit last year to its top solar companies, more than 15 times what the US government provided to American solar manufacturers.
Plane tickets through Europe may get more expensive soon, as airlines may start paying for carbon emissions. Some American carriers have called the charges illegal.
No one had quantified how much carcinogens linger in people's clothes after they get back from the dry cleaner's, until a high school student started asking questions.
Teams from around the world converged on Washington DC to compete in the Solar Decathlon, a competition to see who can build the most energy-efficient solar powered home.
The Finnish research group ZenRobotics has designed a robot that can sort recycling without the help of human hands.
Wangari Maathai, the first African woman to win the Nobel Peace Prize, died of cancer on Sunday -- in this 2007 interview, Maathai describes her life in environmental activism.
Billionaire entrepreneur Richard Branson turns his attention to climate change, enlisting capitalists and entrepreneurs to fight against global warming with the Carbon War Room.
Glaciologists are up in arms about a new map of the world that they think overstates the effects of climate change.
People desperate to get rid of bed bugs are making themselves sick by using harsh chemicals and exposing themselves to insecticide poisoning.